This article discusses the problems related to the optimization of the four-phase adjacent area of the TD wireless network.

When the red wireless 3G standard Presumably everyone is no stranger, so when the wireless TD-SCDMA technology, should be more concerned. After all, it is a technology independently developed by China. Next, we will introduce the problem of adjacent area optimization in Phase 4 of TD wireless network.

The measurement report scheme of the neighboring area reported by UE is collected by the OMC-R of TD system, which has the advantages of zero cost, filling in the blank of indoor signal test, saving the labor expenditure of vehicles, etc, after this method is applied, the quality of the TD wireless network is significantly improved, which is conducive to the next marketing department's TD business promotion.

Disadvantages of existing Optimization Solutions

There are two methods to optimize the neighboring areas of TD-SCDMA (TD) networks:

First, the wireless propagation model was established through the network planning software at the early stage of TD system network construction, and the propagation model was predicted and output the adjacent area list. After the work of The TD wireless network is transferred from the construction phase to the optimization and upgrade phase, the network optimizer tests the lines in the coverage area of the TD wireless network, in addition, the geographic topology information of the base station on the map and the manual experience judgment method are used to optimize the adjacent area of the TD wireless network.

However, the road test requires a lot of time, manpower, and testing costs. The test cannot traverse all regions. The sampling points obtained during the road test mainly come from the test UE, the tested Community, and the testing time, the obtained sampling point information is incomplete and does not have statistical significance. Therefore, optimization of the entire network adjacent area of TD cannot be achieved. At the same time, the road test cannot ensure automatic tracking when the network status changes, and the neighboring areas cannot be adjusted in time according to the network status.

Second, the OMC-R is used to collect the switching statistics of TD wireless network, and the neighboring area is optimized according to the number of switching. The basic idea of the neighbor optimization algorithm based on switching statistics is: based on the existing neighbor configuration, within a certain period of T, considering the large range of candidate adjacent relations in the actual configuration of the OMC-R, and based on the T statistics of the switching statistics of candidate adjacent intervals in this period, the adjacent area configuration of the current network is optimized, remove redundant neighbor relationships, so that the neighboring areas are always in the most reasonable state.

However, this method can only optimize the neighboring areas of the GSM system in the TD system that has been defined as neighboring areas, and cannot discover or add suggestions for the neighboring areas of the GSM system for interoperation in the TD system, this method is highly dependent on the number of users and the data volume of switching performance.

Using Neighboring Area Measurement to optimize TD neighboring areas

When the network coverage is relatively stable, a reasonable neighboring relationship helps improve the switching performance of the wireless network. A reasonable neighboring relationship includes the number of adjacent areas in the TD system and the number of valid neighboring areas in the GSM system for interoperation. Too many neighboring areas affect the measurement accuracy. Effective neighboring areas directly affect the switching performance. If important neighboring areas are missing, the continuity of the call will be affected.

Adjacent Area optimization should be carried out in two aspects: one is to delete the neighboring areas of the redundant TD system and interoperation in the GSM system; the other is to increase the neighboring areas of the TD system and interoperation in the GSM system.

The neighboring measurement report sample data means that RNC collects the measurement report information of the UE's neighboring areas and samples the data according to a certain measurement period, and stores the data one by one. Firstly, a neighbor measurement task is created through the OMC-R. Secondly, the OMC-R sends the neighbor measurement collection condition to RNC. Then, the UE reports the neighbor measurement report to RNC. Finally, RNC reports neighbor measurement reports to OMC-R, and OMC-R records and stores UE neighbor measurement reports.

Promotion Effect and Benefits

1. added the scientific nature of Problem Analysis with objective and massive Statistical Data Analysis

The measurement reports actually sent by users in TD wireless networks are used as the basis for analysis and identification, and the IT measures are used to solidify the data mining, greatly increasing the scientific nature of problem analysis.

2. Cost Saving

Prediction can replace 80% of neighboring area optimization test costs (one city is used as an example ):

Monthly saving for TD Community test vehicles (200 RMB/Time): 200 × 22 times/month = 4400 RMB

RMB 80/person-day (RMB 80/person-day): RMB 3520/month = RMB

Monthly TD test cost savings: (4400 + 3520) × 80% = 6336 RMB

1 city saves TD road test cost every year: 6336 × 12 = 76032 RMB

3. increase revenue

The neighboring area measurement report can be used to optimize the adjacent areas of TD, which can reduce the interoperability re-election duration, reduce the interoperability drop-off rate, effectively improve the network quality, effectively increase the traffic volume, and increase the revenue.

4. Social Benefits

Active Detection of network faults prior to user complaints is of great significance for enhancing user perception, enhancing user loyalty, and building a company brand image.